Question

已下载.90.6，已解压缩，已将Elastic Search移至/ usr / share / elasticsearch（在centosx64 6.4上使用chmod 777 -R权限），将群集重命名为 somethingstupid 并启动服务器。< / p>
已安装的插件ESHead和ESBrowser b / c我很新并且需要它（习惯了Solr的漂亮ui）。这样我知道服务器也在运行。
我可以通过curl创建索引：curl -XPOST 'http://localhost:9200/testindex'并删除它：curl -XDELETE 'http://localhost:9200/testindex'

当我尝试创建新索引并索引类型文档的文档并通过Java API查看它时，eclipse运行代码，在控制台中显示基本日志记录，然后关闭而没有错误。此外，在我的日志中，最新一行显示我已启动弹性搜索，但没有别的。它就像代码甚至没有达到弹性搜索。运行java api后，没有索引或文章出现。我错过了什么？

import java.util.Date;
import java.util.HashMap;
import java.util.Map;

import org.elasticsearch.client.Client;
import org.elasticsearch.node.Node;

import static org.elasticsearch.node.NodeBuilder.*;

public class PostES {

    public static void main (String args[]){
        PostES p = new PostES();
        p.postElasticSearch();
    }


    public static Map<String, Object> putJsonDocument(String title, String content, Date postDate, String author){

            Map<String, Object> jsonDocument = new HashMap<String, Object>();

            jsonDocument.put("title", title);
            jsonDocument.put("conten", content);
            jsonDocument.put("postDate", postDate);
            jsonDocument.put("author", author);

            return jsonDocument;
    }


    private void postElasticSearch(){

            Node node    = nodeBuilder().node();
            Client client   = node.client();

            client.prepareIndex("testindex", "article")
                      .setSource(putJsonDocument("Example Title",
                                                 "This description is so important. You don't even know!",
                                                 new Date(),
                                                 "J.R."))
                                                 .execute().actionGet();

            node.close();
        }


}

我的来源：http://java.dzone.com/articles/elasticsearch-java-api。包括弹性文档在内的所有其他内容都以某种方式失败....（方法jsonBuilder（）未定义为PostES类型。）

根据文件我应该能够做到这一点。但它也没有做任何事情：

import static org.elasticsearch.node.NodeBuilder.nodeBuilder;

import org.elasticsearch.action.index.IndexResponse;
import org.elasticsearch.client.Client;
import org.elasticsearch.node.Node;


public class TestPostMethod2 {

    public static void main(String[] args) {
        Node node = nodeBuilder().local(true).node();
        Client client = node.client();

            String json = 
                    "{\"user\":\"kimchy\"," +
                    "\"postDate\":\"2013-01-30\"," +
                    "\"message\":\"trying out Elastic Search\"}";              

            IndexResponse response = client.prepareIndex("testindex", "article")
                    .setSource(json)
                    .execute()
                    .actionGet();
    }

}

Answer 1

您需要在创建节点时指定群集名称并指定它是client node，或使用transport client。

在这两种情况下，您目前正在做的是启动一个新节点，该节点创建一个具有默认名称的新群集，而您希望有一个客户端节点来加入现有群集。

Node node = nodeBuilder().clusterName("somethingstupid").client(true).node();

Answer 2

不确定这是否相关，但是当我最初尝试从eclipse连接到运行的ES集群时，我必须将其添加到我的tomcat的参数中：

-Delasticsearch -Des.path.home=/usr/local/opt/elasticsearch

其中elasticsearch是您在elasticsearch.yml中定义的名称，当然还有您安装ES的路径

Answer 3

我可以让api工作的方法是不使用它：

import java.io.BufferedReader;
import java.io.InputStreamReader;
import org.apache.http.HttpResponse;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.entity.StringEntity;
import org.apache.http.impl.client.DefaultHttpClient;


public class PostHttpClient {

    public static void main(String[] args) {
        try{
        DefaultHttpClient httpClient = new DefaultHttpClient();
        HttpPost postRequest = new HttpPost(
            "http://localhost:9200/testindex/article");

        StringEntity input = new StringEntity("{\"name\":\"ES JAVA API WorkAround\",\"category\":\"Garbage\"}");
        input.setContentType("application/json");
        postRequest.setEntity(input);

        HttpResponse response = httpClient.execute(postRequest);

        if (response.getStatusLine().getStatusCode() != 201) {
            throw new RuntimeException("Failed : HTTP error code : "
                + response.getStatusLine().getStatusCode());
        }

        BufferedReader br = new BufferedReader(
                        new InputStreamReader((response.getEntity().getContent())));

        String output;
        System.out.println("Output from Server .... \n");
        while ((output = br.readLine()) != null) {
            System.out.println(output);
        }

        httpClient.getConnectionManager().shutdown();

      } catch (Exception e) {

        e.printStackTrace();

      } 

    }

}

Answer 4

为什么不将Transport Client与java.util.Map一起使用？

import org.elasticsearch.action.index.IndexResponse;
import org.elasticsearch.client.Client;
import org.elasticsearch.client.transport.TransportClient;
import org.elasticsearch.common.transport.InetSocketTransportAddress;

import java.util.*;

public class Test {

    public static Client getTransportClient(String host, int port) {

        return new TransportClient()
                .addTransportAddress(new InetSocketTransportAddress(host, port));
    }

    public static IndexResponse doIndex(Client client, String index, String type, String id, Map<String, Object> data) {

        return client.prepareIndex(index, type, id)
                .setSource(data)
                .execute()
                .actionGet();
    }

    public static void main(String[] args) {

        Client client = getTransportClient("localhost", 9300);

        String index  = "twitter";
        String type   = "tweet";
        String id     = null;        // set id here if you want to

        Map<String, Object> data = new HashMap<String, Object>();
        data.put("text", "Posted from Java @ " + System.currentTimeMillis());
        data.put("user", "Igal");
        data.put("date", new Date());

        IndexResponse result = doIndex(client, index, type, id, data);

        System.out.println((result.isCreated() ? "created" : "updated") + " document " + result.getId() );

        client.close();
    }
}

Answer 5

我建议任何人都使用rest client（jest）代替transport client，请记住添加在link-1和link-2中指定的所有依赖项

替换 “ index_name” =带有您的索引名称

使用Java创建简单索引并插入数据，

public void setData(String data)
{           
    try

    {
     // Construct a new Jest client according to configuration via factory
     JestClientFactory factory = new JestClientFactory();
     factory.setHttpClientConfig(new HttpClientConfig
                            .Builder("http://localhost:9200")
                            .multiThreaded(true)
                            .build());
     JestClient client = factory.getObject();

client.execute(new CreateIndex.Builder("index_name").build());



        String source = jsonBuilder()
                .startObject()
                .field("data", data)
                 //other data
                .endObject().string();
        System.out.println(source); // verify data

        Index index = new Index.Builder(source).index("index_name").type("_type").build();
        client.execute(index);


    }
    catch(IOException i)
    {
        i.printStackTrace();
    }
    catch(Exception e)
    {
        e.printStackTrace();
    }
 }

Elasticsearch Java API索引文档

5 个答案: